The application of six different models to estimate the genetic parameters, variancecomponents and breeding values for birth weight of Holstein calves
Yazarlar (3)
Prof. Dr. Aziz ŞAHİN Kırşehir Ahi Evran Üniversitesi, Türkiye
Zafer Ulutaş Niğde Ömer Halisdemir Üniversitesi, Türkiye
Dr. Öğr. Üyesi Emre UĞURLUTEPE Kırşehir Ahi Evran Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Journal of Applied Animal Research (Q4)
Dergi ISSN 0971-2119 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 01-2017
Kabul Tarihi 12-04-2026 Yayınlanma Tarihi
Cilt / Sayı / Sayfa 45 / 1 / 598–602 DOI 10.1080/09712119.2016.1239581
Makale Linki http://dx.doi.org/10.1080/09712119.2016.1239581
Özet
This research was conducted to determine variance component, genetic parameters and breeding values (EBV) for the birth weight (BW) of Holstein calves. In this context, the direct genetic (), maternal genetic () and maternal permanent environmental effects, which affect BW, were separately assessed. The multi-trait, derivative-free restricted maximum likelihood programme was used for determining the effect of the genetic parameters by using models that either included or excluded the maternal genetic and/or permanent maternal environmental effects. The estimation of the BW of Holstein calves was optimized by evaluating six different models. The best model was chosen according to the log-likelihood ratio tests. Within the context of the study, a total of 4443 calves were investigated between 1987 and 2006. Among the six different models, model 4 was selected as the best model, since it had the lowest value …
Anahtar Kelimeler
Breeding value | Direct genetic | Genetic parameters | Maternal genetic | Variance component